Travelers driving into New York City on the Major Deegan Expressway may notice a huge billboard with the thundering words "JUDGMENT DAY May 21, 2011." It’s not an ad for a new Hollywood blockbuster. Rather, it is a warning of the impending Apocalypse, which is scheduled to begin on May 21, with the rapturing of believers, and finish with the Earth’s total destruction on Oct. 21, 2011.